Section 14 Direct Memory Access Controller (DMAC)
Rev.1.00 Dec. 13, 2005 Page 573 of 1286
REJ09B0158-0100
Bit Bit
Name
Initial
Value R/W Descriptions
27 to 25 RPT[2:0]
000
R/W
DMA Setting Renewal Specify
These bits are enabled in CHCR0 to CHCR3 and
CHCR6 to CHCR9.
000: Normal mode (DMAC operation)
001: Repeat mode
SAR/DAR/TCR used as repeat area
010: Repeat mode
DAR/TCR used as repeat area
011: Repeat mode
SAR/TCR used as repeat mode
100: Reserved (setting prohibited)
101: Reload mode
SAR/DAR used as reload area
110: Reload mode
DAR used as reload area
111: Reload mode
SAR used as reload area
24 — 0 R Reserved
This bit is always read as 0. The write value should
always be 0.
23 DO 0 R/W
DMA
Overrun
Selects whether DREQ is detected by overrun 0 or by
overrun 1. This bit is valid only in CHCR0 to CHCR3.
0: Detects DREQ by overrun 0
1: Detects DREQ by overrun 1
22
RL
0
R/W
Request Check Level
Selects whether the DRAK signal is an active-high or
active-low output. This bit valid only in CHCR0 to
CHCR3.
0: DRAK is an active-low output (
DRAK
)
1: DRAK is an active-high output
21 — 0 R Reserved
This bit is always read as 0. The write value should
always be 0.
Содержание SH7780 Series
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Страница 450: ...Section 11 Local Bus State Controller LBSC Rev 1 00 Dec 13 2005 Page 400 of 1286 REJ09B0158 0100 ...
Страница 492: ...Section 12 DDR SDRAM Interface DDRIF Rev 1 00 Dec 13 2005 Page 442 of 1286 REJ09B0158 0100 ...
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Страница 726: ...Section 18 Timer Unit TMU Rev 1 00 Dec 13 2005 Page 676 of 1286 REJ09B0158 0100 ...
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Страница 1070: ...Section 26 Serial Sound Interface SSI Module Rev 1 00 Dec 13 2005 Page 1020 of 1286 REJ09B0158 0100 ...
Страница 1104: ...Section 27 NAND Flash Memory Controller FLCTL Rev 1 00 Dec 13 2005 Page 1054 of 1286 REJ09B0158 0100 ...
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